Ideal gasses occur at high pressures
occur at low temperatures
have perfectly elastic collisions
all of these are true
none of these are true

The element that has the greatest electronegativity is

An object resting on a table weighs 100 n. with what force is the object pushing on the table? with what force is the table pushing on the object? explain how you got your answer.

Athe top of a hill, an athlete on a skateboard has x joules of mechanical energy. how much mechanical energy will she have at the bottom of the hill? ignore the effects of friction.